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Algorithm for Visualization of Zero Divisor Graphs of the Ring ℤn Using MAPLE Coding
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作者 nasir ali 《Open Journal of Discrete Mathematics》 2024年第1期1-8,共8页
This research investigates the comparative efficacy of generating zero divisor graphs (ZDGs) of the ring of integers ℤ<sub>n</sub> modulo n using MAPLE algorithm. Zero divisor graphs, pivotal in the study ... This research investigates the comparative efficacy of generating zero divisor graphs (ZDGs) of the ring of integers ℤ<sub>n</sub> modulo n using MAPLE algorithm. Zero divisor graphs, pivotal in the study of ring theory, depict relationships between elements of a ring that multiply to zero. The paper explores the development and implementation of algorithms in MAPLE for constructing these ZDGs. The comparative study aims to discern the strengths, limitations, and computational efficiency of different MAPLE algorithms for creating zero divisor graphs offering insights for mathematicians, researchers, and computational enthusiasts involved in ring theory and mathematical computations. 展开更多
关键词 Zero Divisor Graph Ring Theory Maple Algorithm n Modulo n Graph Theory Mathematical Computing
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Cadmium (Cd) Removal from Saline <i>Water by Veronica anagallis</i>and <i>Epilobium laxum</i>Plants in Hydroponic System
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作者 Fazal Hadi Ayaz Ahmad nasir ali 《Agricultural Sciences》 2014年第11期935-944,共10页
Present study was conducted to investigate the Cadmium (Cd) phytoextraction potential of two plants (Veronica anagallis-aquatic and Epilobium laxum Royle) for Cd removal from induced saline water. In hydroponic system... Present study was conducted to investigate the Cadmium (Cd) phytoextraction potential of two plants (Veronica anagallis-aquatic and Epilobium laxum Royle) for Cd removal from induced saline water. In hydroponic system, various concentrations of the Cd (50, 100, and 150 ppm) and NaCl salt (1000, 3000, and 6000 ppm) were used alone and in various combinations to evaluate the effect of salt (NaCl) concentrations on Cd absorption and accumulation in Veronica anagallis and Epilobium plants. The Cd at higher concentrations (100 and 150 ppm) significantly reduced the growth and biomass of both plants and addition of salt (NaCl) to growth media (Hoagland solution) further reduced the growth. The Cadmium (Cd) translocation factor (TF) of Epilobium plant was more than one (1), while the Veronica plant showed translocation factor less than 0.5. Veronica plant showed higher Bio-concentration factor (BCF) as more than 3.5 and Epilobium plant demonstrated Bio-concentration factor less than 1 (BCF 1 is a threshold limit for a plant to be hyper-accumulator of Cd). Conclusively, the Veronica anagallis plant is reported as Cd hyper-accumulator, while Epilobium laxum plant as non hyper-accumulator on the basis of BCF values in the present findings. Further study on Veronica and Epilobium plants is recommended. 展开更多
关键词 CADMIUM SALINE Water Metal Phytoaccumulation VERONICA ANAGALLIS Epilobium laxum
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能源植物斑茅在不同生长时期的产量与组分变化 被引量:1
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作者 闫芸芸 刘健 +3 位作者 甘礼惠 余小龙 龙敏南 nasir ali 《热带作物学报》 CSCD 北大核心 2014年第12期2349-2354,共6页
研究不同时期斑茅产量及其化学组分的变化。结果表明:斑茅生物质产量在11月达到最高,其后开始下降;整个生长发育过程中茎叶生物质产量比呈现上升趋势;含水量随生长发育的进行显著降低;叶片灰分含量全年最低为5月,从10月份开始显著增加,... 研究不同时期斑茅产量及其化学组分的变化。结果表明:斑茅生物质产量在11月达到最高,其后开始下降;整个生长发育过程中茎叶生物质产量比呈现上升趋势;含水量随生长发育的进行显著降低;叶片灰分含量全年最低为5月,从10月份开始显著增加,至12月份达到最高。茎秆灰分含量略低于叶片,全年最低为10月,最高为7月,变化幅度不大。叶片中木质素含量全年由高到低排列顺序为12月>11月>9月>10月>7月>8月>6月;茎秆中木质素含量全年由高到低排列顺序为12月>11月>9月>7月>8月>10月>6月。10月份茎秆含水量低,灰分含量最低,热值较高,结合产量和燃料品质考虑其更适于直接燃烧,而9月份叶片则更加适于作为生物转化的材料。 展开更多
关键词 斑茅 收获时间 化学组分
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基于pH值调控的厌氧酸化产物分布及微生物群落特征研究 被引量:5
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作者 吴娟娟 徐恒 +4 位作者 nasir ali 苑泉 黄博 于彩虹 王凯军 《中国沼气》 2018年第1期3-7,共5页
针对果蔬和餐厨垃圾等易降解有机固体废弃物厌氧消化过程的酸化问题,国内外学者通常采用两相厌氧工艺替代传统的单相厌氧工艺。为进一步提高两相厌氧工艺的高效性和稳定性,文章考察了不同pH值(4.0,5.0和6.0)条件下有机物厌氧酸化产物分... 针对果蔬和餐厨垃圾等易降解有机固体废弃物厌氧消化过程的酸化问题,国内外学者通常采用两相厌氧工艺替代传统的单相厌氧工艺。为进一步提高两相厌氧工艺的高效性和稳定性,文章考察了不同pH值(4.0,5.0和6.0)条件下有机物厌氧酸化产物分布情况和调控效应;并对稳定形成的产酸微生物群落结构进行了分析。结果表明,pH值控制能明显提高反应器酸化率;pH值为5.0和6.0时反应器酸化率较高,其最高值均超过70%,前者酸化产物以乙醇、乳酸和乙酸为主,后者则出现有大量丙酸(约占总产酸量50%),因此,pH值控制为5.0有望作为有机物产酸相的优选条件。pH值为5.0时形成的优势水解酸化菌属主要有Lactobacillus(8.9%),Prevotella(32.0%),Bifidobacterium(22.4%),Clostridium(22.3%)和Sporolactobacillus(11.4%),且优势菌属的典型代谢途径与实验过程中产物分布特征具有很好的一致性。 展开更多
关键词 pH值调控 厌氧消化 产酸 微生物群落分析
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Winding Inductance and Performance Prediction of a Switched Reluctance Motor with an Exterior-rotor Considering the Magnetic Saturation 被引量:4
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作者 Minjie Zhang nasir ali Qiang Gao 《CES Transactions on Electrical Machines and Systems》 CSCD 2021年第3期212-223,共12页
This paper deals with an analytical method to effectively calculate the inductance of an exterior-rotor switched reluctance motor(SRM),which evaluates the winding inductance of both the active section and the end sect... This paper deals with an analytical method to effectively calculate the inductance of an exterior-rotor switched reluctance motor(SRM),which evaluates the winding inductance of both the active section and the end section,accounting for the influence of core saturation.According to the inductance calculated by the analytical model,the flux linkage table and torque table can be established,and the steady state performance such as phase current,flux linkage,copper loss and core loss can be predicted.Effectiveness of this method is verified by the finite element method as well as by experimental results of a 12/8 SRM prototype. 展开更多
关键词 Analytical approach Exterior-rotor switched reluctance motor Magnetic saturation INDUCTANCE
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Evaluating the Optimum Transplanting Time for Different Coarse Rice Genotypes under Semi-Arid Conditions of Faisalabad 被引量:1
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作者 Muhammad Ahtisham Tahir Muhammad Ahmad Arain +7 位作者 Saba Durrani Abdul Shakoor Ahtsham Bilal nasir ali Muhammad Ishfaq Umer Farooq Siraj Ahmed Muhammad Irfan 《Agricultural Sciences》 2018年第1期69-77,共9页
Continuously changing climate and availability of different rice genotypes make it necessary to find optimum time of sowing as well as suitable variety for cultivation to get maximum productivity under a specific set ... Continuously changing climate and availability of different rice genotypes make it necessary to find optimum time of sowing as well as suitable variety for cultivation to get maximum productivity under a specific set of climatic conditions. A field study was carried out to search out the suitable rice transplanting time for four different coarse genotypes under the semi-arid environment of Faisalabad. The experiment was conducted at Agronomic Research Area, University of Agriculture, Faisalabad and was laid out in randomized complete block design (RCBD) with split plot arrangement keeping transplanting time in main plots while rice genotypes in subplots. Variability among treatments was measured by Fisher’s ANOVA (P ≤ 5%) and LSD test was applied to compare the differences among treatments’ means. The ANOVA indicated statistically significant differences among genotypes as well as transplanting dates irrespective of all studied traits while interactive effects of both were found to be non-significant. NIBGE-1 performed best with maximum paddy yield of 6.05 t/ha while KSK-434 performed poor with paddy yield of 2.78 t/ha. Increased paddy yield and yield related parameters of all rice genotypes were recorded where transplantation was done on 25th of June. Generally, paddy yield decreased with delaying the transplanting time. The results suggested that NIBGE-1 can perform better under the semi-arid conditions of Faisalabad and last week of June might be the optimum time for nursery transplantation. It can also be further elucidated that late transplanting causes yield reduction which could not be recommended among farmers. 展开更多
关键词 Coarse Rice GENOTYPES TRANSPLANTING Time PADDY Yield SEMI-ARID
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Regulation and Improvement of Cellulase Production: Recent Advances 被引量:1
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作者 nasir ali Muhammad Ammar Athar +2 位作者 Yasir Hayat Khan Muhammad Idrees Dawood Ahmad 《Natural Resources》 2014年第14期857-863,共7页
Cellulases and hemicellulases are the main industrial sources from different microorganisms used to depolymerise plant biomass to simple sugars that are converted to chemical intermediates and biofuels, such as ethano... Cellulases and hemicellulases are the main industrial sources from different microorganisms used to depolymerise plant biomass to simple sugars that are converted to chemical intermediates and biofuels, such as ethanol. Cellulases are formed adaptively, and several positive (xyr1, Ace2, HAP2/3/5) and negative (Ace1, Cre1) components involved in this regulation are now known. In this review, we summarise current knowledge about how cellulase biosynthesis is regulated, and outline recent approaches and suitable strategies for facilitating the targeted improvement of cellulase production by genetic engineering. Trichoderma reesei is the preferred organism for producing industrial cellulases. However, a more efficient heterologous expression system for enzymes from different organism is needed to further improve its cellulase mixture. In addition those optimizations of the promoter and linker for hybrid genes can dramatically improve the efficiency of heterologous expression of cellulase genes. 展开更多
关键词 CELLULASE REGULATION TRANSCRIPTION PROMOTER REVIEW
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Effects of Convolvulus arvensis Water Extract on Germination of Okra Under Different Seed Sizes
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作者 Abid Hussain Khoso Ghulam Mustafa Laghari +3 位作者 Aziz Ahmed Laghari ali Muhammad Bozdar Asif ali Kaleri nasir ali 《Journal of Northeast Agricultural University(English Edition)》 CAS 2017年第1期1-8,共8页
Convolvulus arvensis is a toxic allelopathic weed that suppresses germination and growth of crops. The prime object of present study was to investigate effect of Convolvulus arvensis water extract on germination and p... Convolvulus arvensis is a toxic allelopathic weed that suppresses germination and growth of crops. The prime object of present study was to investigate effect of Convolvulus arvensis water extract on germination and performance of okra with different seed sizes. The seeds of okra variety pusa green were separated into three different sizes, viz large size (4.00-5.00 mm), medium size (3.00-3.50 mm) and small size (2.00-3.50 mm), and then soaked in allelopathic plant bindweed water extract and kept in patrisdishes for germination into the germinator at 15℃. The experiment was laid out using Complete Randomized Design (CRD) with three replications. The results showed that after sowing of 12 days the highest germination was observed in non-treated seeds as compared to seeds treated in Convolvulus arvensis water extract for 1 h, further non-treated large seeds produced maximum plants as compared to treated small seeds after sowing of 24 days. Meanwhile, root length, shoot length, root fresh and dry weight, shoot fresh and dry weight were recorded higher in non-treated large seeds as compared to small seeds soaked for 1 h in Convolvulus arvensis allelopthic water extract. It could be found that Convolvulus arvensis affected germination, seed growth and overall performance of okra, further presence Convolvulus arvensis in crops could cause negative impact on germination and integrity of okra crops. 展开更多
关键词 OKRA GERMINATION Convolvulus arvensis water extract
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Carbonized waste milk powders as cathodes for stable lithium-sulfur batteries with ultra-large capacity and high initial coulombic efficiency
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作者 Rabia Khatoon Sanam Attique +11 位作者 Rumin Liu Sajid Rauf nasir ali Luhong Zhang Yu-Jia Zeng Yichuan Guo Yusuf Valentino Kaneti Jongbeom Na Haichao Tang Hongwen Chen Yang Tian Jianguo Lu 《Green Energy & Environment》 SCIE EI CSCD 2022年第5期1071-1083,共13页
To explore the natural resources as sustainable precursors offers a family of green materials.The use of bio-waste precursors especially the remaining from food processing is a scalable,highly abundant,and cost-effect... To explore the natural resources as sustainable precursors offers a family of green materials.The use of bio-waste precursors especially the remaining from food processing is a scalable,highly abundant,and cost-effective strategy.Exploring waste materials is highly important especially for new materials discovery in emerging energy storage technologies such as lithium sulfur batteries(LSBs).Herein,waste milk powder is carbonized and constructed as the sulfur host with the hollow micro-/mesoporous framework,and the resulting carbonized milk powder and sulfur(CMP/S) composites are employed as cathodes for LSBs.It is revealed that the hollow micro-/mesoporous CMP/S framework can not only accommodate the volume expansion but also endow smooth pathways for the fast diffusion of electrons and Li-ions,leading to both high capacity and long cycling stability.The CMP/S composite electrode with 56 wt% loaded sulfur exhibits a remarkable initial capacity of 1596 mAh g^(-1) at 0.1 C,corresponding to 95% of the theoretical capacity.Even at a rate of 1 C,it maintains a high capacity of 730 mAh g^(-1) with a capacity retention of 72.6% after 500 cycles,demonstrating a very low capacity fading of only 0.05% per cycle.Importantly,the Coulombic efficiency is always higher than 96%during all the cycles.The only used source material is expired waste milk powders in our proposal.We believe that this "trash to treasure" approach will open up a new way for the utilization of waste material as environmentally safe and high performance electrodes for advanced LSBs. 展开更多
关键词 composites POWDERS INITIAL
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An Efficient Procedure for DNA Isolation and Profiling of the Hyper Variable MtDNA Sequences
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作者 Nazia Akbar Habib Ahmad +2 位作者 Muhammad Shahid Nadeen nasir ali Muhammad Saadiq 《Journal of Life Sciences》 2015年第11期530-534,共5页
Present study describes the results of an efficient protocol for the isolation of good quality DNA from human saliva. The protocol includes collection of saliva in sterile specimen tubes, followed by the cell lysis. A... Present study describes the results of an efficient protocol for the isolation of good quality DNA from human saliva. The protocol includes collection of saliva in sterile specimen tubes, followed by the cell lysis. After formation of cell lysate, proteins wereextracted by phenol chloroform treatment for purification of DNA. The purified DNA was precipitated by adding equal volume of isopropanol to the treated supernatant. After isolation DNA pellet was washed with 70% ethanol, air-dried and was suspended in 30 pL of double distilled water. Best quality of DNA was extracted from the saliva samples and the PCR product was amplified for hyper-variable regions (HVI& HV2) of the mitochondrial DNA. The genes were cleaned with GeneAll gel elution kit (Gel SV) (Cat. No. 102-10) and sequenced accordingly. The DNA isolation protocol presented here is recommended for the isolation, best quality and yield of DNA from the human saliva. 展开更多
关键词 Human saliva DNA isolation mtDNA sequences forensic study.
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Construction of degradable liposome-templated microporous metal-organic frameworks with commodious space for enzymes
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作者 Cheng Cheng nasir ali +3 位作者 Ji Liu Juan Qiao Ming Wang Li Qi 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第11期294-298,共5页
The construction of enzyme reactors based on metal-organic frameworks(MOFs)as the immobilized matrix is a proven strategy that has achieved the widespread application of enzymes across industries.Although many MOFs an... The construction of enzyme reactors based on metal-organic frameworks(MOFs)as the immobilized matrix is a proven strategy that has achieved the widespread application of enzymes across industries.Although many MOFs and a variety of strategies have been developed,a formidable challenge remains in maintaining the high enzyme activity with excellent recyclability and tolerance for harsh conditions.Herein,using degradable redox stimuli-responsive liposomes as the templates with microporous MOFs(M-MOFs)as the hosts for enzyme encapsulation,a series of enzyme reactors(enzyme@M-MOFs)was designed and created.Based on the premise of enhancing enzyme protection in the harsh environment,this strategy provided a high degree-of-freedom space via removal of liposomes that improved the conformational freedom of the enzymes,promoted the mass transfer of substrates and products,and greatly boosted the catalytic activity.Importantly,the strategy had good universality and was applied to various liposomes,M-MOFs and enzymes.Additionally,the co-encapsulation of different enzymes with synergistic functions was performed using the M-MOFs platform.This study solved the problems of the conformation limitation of enzymes and mass transfer resistance of substrates and products using the proposed enzyme@M-MOFs,providing a new approach for the construction of biological cascade reaction devices based on MOFs materials. 展开更多
关键词 Metal organic frameworks Degradable liposomes Enzyme conformational freedom NANOREACTOR BIOCATALYSIS
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嗜热厌氧菌Caldicellulosiruptor sp. F32中降解β-1,3-1,4葡聚糖水解酶的协同性分析及糖基化对F32EG5热稳定性影响 被引量:2
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作者 冯杰 Hamed IHamouda +3 位作者 nasir ali 王雨铭 张培玉 吕明 《微生物学报》 CAS CSCD 北大核心 2019年第11期2144-2154,共11页
【目的】通过研究来自极端嗜热厌氧菌Caldicellulosiruptor sp.F32中3个可降解β-1,3-1,4葡聚糖(β-葡聚糖)的糖苷水解酶,解析其在降解β-葡聚糖过程中协同作用,以及异源表达的糖基化修饰对β-葡聚糖酶F32EG5热稳定性的影响,为该系列水... 【目的】通过研究来自极端嗜热厌氧菌Caldicellulosiruptor sp.F32中3个可降解β-1,3-1,4葡聚糖(β-葡聚糖)的糖苷水解酶,解析其在降解β-葡聚糖过程中协同作用,以及异源表达的糖基化修饰对β-葡聚糖酶F32EG5热稳定性的影响,为该系列水解酶的应用提供考据。【方法】通过大肠杆菌异源表达β-葡聚糖酶F32EG5和Lam16A-GH,以及β-葡萄糖苷酶BlgA,利用DNS、TLC等方法检测其在β-葡聚糖降解过程中的协同性及底物耐受能力。随后,利用毕赤酵母对F32EG5进行异源表达,以及对糖基化修饰的p-F32EG5进行酶学对比。【结果】β-葡聚糖酶F32EG5和Lam16A-GH单独作用于底物时,水解产物不同。但混合使用时,低聚合度寡糖的比例增加。β-葡萄糖苷酶BlgA分别与F32EG5和Lam16A-GH复配时,均展示出良好的协同效应和底物耐受能力。此外,利用毕赤酵母异源表达的p-F32EG5,没有明显改变其最适pH和最适温度,但在超高温下(80–90°C)的热稳定性和催化效率相对于未被糖基化的F32EG5提高2倍以上。【结论】葡萄糖糖苷水解酶BlgA分别与β-葡聚糖酶F32EG5、Lam16A-GH复配,在水解β-葡聚糖过程中表现出良好的协同性和底物耐受能力,同时毕赤酵母异源表达的糖基化修饰能提高在超高温环境下的热稳定性能,有利于酶制剂生产造粒过程中的酶活保留,从而使F32EG5具备应用化潜力。 展开更多
关键词 Β-葡聚糖 Caldicellulosiruptor sp.F32 糖苷水解酶 糖基化
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Strategies to improve aerobic granular sludge stability and nitrogen removal based on feeding mode and substrate 被引量:14
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作者 Quan Yuan Hui Gong +4 位作者 Hao Xi Heng Xu Zhengyu Jin nasir ali Kaijun Wang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2019年第10期144-154,共11页
A systemic strategy was proposed to improve aerobic granular sludge(AGS)stability and nitrogen(N)removal efficiency by optimizing feeding mode and substrate aiming at complicated wastewater characteristics.Key functio... A systemic strategy was proposed to improve aerobic granular sludge(AGS)stability and nitrogen(N)removal efficiency by optimizing feeding mode and substrate aiming at complicated wastewater characteristics.Key functional groups at the genus level identified by high-throughput sequencing were evaluated as well.The results showed that anaerobic feeding mode and acetate promoted the compact AGS formation with excellent total nitrogen(TN)removal efficiency(averaging 91.7%±4.1%)at various dissolved oxygen conditions.While the aerobic feeding mode led to a loose AGS structure with a vulnerable anaerobic core and poor TN removal efficiency(averaging58.8%±7.4%).Simultaneous nitrification and denitrification process played the dominant role in N removal in compact AGS over the alternating nitrification and denitrification process.High-concentration glucose undermined feast-famine condition with filamentous bacteria growth out of granule and decreased TN removal efficiency to 67.3%±15.2%.Lower food to microorganism ratio may result in a lower N removal rate attributed to the sharply increased biomass concentration fed by glucose.Ammonia-oxidizing bacteria,nitrite-oxidizing bacteria,denitrifying bacteria,and denitrifying phosphorus accumulation organisms enriched during AGS granulation also contributed to the efficient N removal.The proposed strategy provided insights into the relationship between various factors and stable AGS formation,and systemic operation methods for various complicated wastewater treatment. 展开更多
关键词 AEROBIC GRANULAR SLUDGE Feeding mode SUBSTRATE N removal STABILITY
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Ultrabroadband and multiband infrared/terahertz photodetectors with high sensitivity 被引量:5
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作者 JIAQI ZHU HE ZHU +8 位作者 MENGJUAN LIU YAO WANG HANLUN XU nasir ali HUIYONG DENG ZHIYONG TAN JUNCHENG CAO NING DAI HUIZHEN WU 《Photonics Research》 SCIE EI CAS CSCD 2021年第11期2167-2175,共9页
Broadband response is pursued in both infrared(IR)and terahertz(THz)detection technologies,which find their applications in both terrestrial and astronomical realms.Herein,we report an ultrabroadband and multiband IR/... Broadband response is pursued in both infrared(IR)and terahertz(THz)detection technologies,which find their applications in both terrestrial and astronomical realms.Herein,we report an ultrabroadband and multiband IR/THz detector based on blocked-impurity-band detecting principle.The detectors are prepared by implanting phosphorus into germanium(Ge:P),where photoresponses with a P impurity band,a self-interstitial defect band,and a vacancy-P(V-P)pair defect band are realized simultaneously.The response spectra of the detectors show ultrabroad and dual response bands in a range of 3-28μm(IR band)and 40-165μm(THz band),respectively.Additionally,a tiny mid-IR(MIR)band within 3-4.2μm is embedded in the IR band.The THz band arises from the P impurity band,whereas the IR and the MIR bands are ascribed to the two defect bands.At150 m V and 4.5 K,the peak detectivities of the three bands are obtained as 2.9×10^(12) Jones(at 3.9μm),6.8×10^(12) Jones(at 16.3μm),and 9.9×10^(12) Jones(at 116.5μm),respectively.The impressive coverage andsensitivity of the detectors are promising for applications in IR and THz detection technologies. 展开更多
关键词 MULTIBAND BANDS DEFECT
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